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Novel organic corrosion inhibitor for reinforced concrete

A technology of reinforced concrete and rust inhibitor, applied in the field of building materials, can solve the problems of corrosion and damage of reinforced concrete structure, destruction of passivation film on the surface of steel bars, reduction of alkalinity of pore liquid, etc., and achieves good rust inhibitor effect, good environmental protection effect, Good acid and alkali resistance

Pending Publication Date: 2019-05-21
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a severe corrosive environment, the intrusion of carbon dioxide will cause carbonization of the concrete, reduce the alkalinity of the pore fluid, and destroy the passivation film on the surface of the steel bar; in the marine environment or deicing salt environment, chloride ions will penetrate to the surface of the steel bar and activate the steel bar , causing corrosion damage to reinforced concrete structures

Method used

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  • Novel organic corrosion inhibitor for reinforced concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Organic reinforced concrete rust inhibitor: get 20% (weight ratio) of chitosan, 80% (weight ratio) of diethanolamine, mix with water with a mass ratio of 1:100, heat to 35°C, seal and stir for 1.5 hours, and prepare The rust inhibitor.

Embodiment example 2

[0029] Organic reinforced concrete rust inhibitor: get 40% (weight ratio) of chitosan, 60% (weight ratio) of diethanolamine, mix with water with a mass ratio of 1:100, heat to 35°C, seal and stir for 1.5 hours, and prepare The rust inhibitor.

Embodiment example 3

[0031] Organic reinforced concrete rust inhibitor: get 60% (weight ratio) of chitosan, 40% (weight ratio) of diethanolamine, mix with water with a mass ratio of 1:100, heat to 35°C, seal and stir for 1.5 hours, and prepare The rust inhibitor.

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Abstract

The invention provides a novel organic corrosion inhibitor for reinforced concrete. The corrosion inhibitor comprises the following components in mass percent: 20-60% of chitosan and the derivatives thereof and 40-80% of organic amine. The technical proposal provided by the invention that by adopting the technical scheme that the organic corrosion inhibitor for the reinforced concrete is used by being directly doped into the concrete, the corrosion resistance is greatly improved and the environmental protection performance is enhanced, thereby being widely applied to offshore reinforced concrete engineering projects such as harbor wharves and bridge tunnels.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a novel organic reinforced concrete rust inhibitor. Background technique [0002] Reinforced concrete is an economical and practical building structure material, which is widely used in facilities such as bridges, docks, tunnels and offshore platforms. As the requirements for engineering usability and safety are getting higher and higher, the durability of reinforced concrete structures in severe corrosive environments has attracted much attention. [0003] The corrosion of steel bars in concrete is the main factor affecting the durability of reinforced concrete structures. In newly-built reinforced concrete structures, due to the existence of highly alkaline pore fluid, a passivation film will be formed on the surface of the steel bars to protect the steel bars. However, in a severe corrosive environment, the intrusion of carbon dioxide will cause carbonization of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/61
Inventor 张琰程永锋王彦良刘宗杰
Owner CHINA ELECTRIC POWER RES INST
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